Incandescent lamp.



PATENTED AUG. 25, 1903.

L. DENAYROUZE.

INGANDESGENT LAMP.

APPLICATION FILED APR.12, 1902.

N0 MODEL.

FIG. 4.

INVENTOR;

WITNESSES: fin I By Attorneys,

certain new and useful Improvements in Incandescent Lamps, of which thefollowing is "UNITED STATES Patented August 25, 1903.

PATENT OFFICE.

LOUIS DENAYROUZE, OF NEUILLY-SUR-SEINE, FRANCE, ASSIGNOR. TO CEN- TRALLIGHTING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 736,943, dated August25, 1903.

Serial No. 102,547. (No model.)

To all whom it may concern:

Be it known that I, LOUIS DENAYROUZE, a

citizen of the Republic of France, residing in Neuilly-sur- Seine,France, have invented a specification.

In Letters Patent No. 684,921, granted to me October 22, 1901, I havedescribed a lamp for use with refractory mantles in which I use one ormore mixers, which may be ordinary Bunsen burners, with a chamberlocated above and communicating with said mixers, a screen closing thetop of such chamber, and a draft-tube passing through said chamber andadmitting air within the mantle. My present invention is applicable tolamps of the type described in said patent, but is not necessarilylimited to this type of lamps, and has for its object principally toefiect a very thorough mixture of gas and air and to provide a verystrong and at the same time cheap construction.

My invention also provides various improvements in detail, ashereinafter specified.

Referring to the accompanying drawings, illustrating an embodiment of myinvention, Figure 1 is a central section through the complete burner.Fig. 2 is aplan thereof at the plane indicated by the line 2 2 of Fig.1, omitting the mantle and globe holder. Fig. 3 is a horizontal sectionon the line 3 3 of Fig. 1. Fig. 4 is a horizontal section on the line 44 of Fig. 1.

A point of improvement over the construc tion in my patent abovereferred to is the arrangement of the draft-tube so that it dischargesdirect into the mixing-chamber instead of passing through the same.Another point of improvement is the formation of the group of mixers ortubes, terminating at their lower ends in a common open chamber, inwhich chamber there are gas-nozzles arranged to direct jets of gas intosuch tubes. The mixers, including the mixing-tubes and the correspondinggas-nozzles, are preferably arranged in an annular. group, and thedrafttube is arranged centrally thereof and alsp terminates at its lowerend in the'open chamber. Simplicity of construction is secured byforming the burner of two members, the upper one of which includes theupper mixing-chamber, the lower open chamber, and the mixing and drafttubes communicating at their lower ends-with the open chamber anddischarging at their upper ends into the mixing-chamber, while thesecond member carries the gas-nozzles and is adapted to be connected tothe firstmentioned member, with the nozzles in the open chamber in theirproper position in line with the tubes.

Referring to the accompanying drawings, A indicates the mixing-chamber;B B, the mixing and draft tubes, which in the embodiment illustrated areidentical except as to position, the mixing-tubes being arranged in anannular group with the draft-tube in the center.

0 is an open chamber which communicates with each of the tubes B andinto which air is admitted in any suitable way, preferably byconstructing the chamber in the form of a cage with openings of suitablesize in its walls. Preferably, as shown, the elements referred to arecomprised in a single integral inember D, at the upper end of which isplaced the screen E beneath the mantle F and the lower end of which isadapted for attachment to the member G, which carries gas-nozzles H. Thelower ring J of the member D preferably fits over and rests upon ashoulder of the member G and after being set with the nozzles H in linewith the mixing-tubes B is fastened thereto, as by a set-screw K. Themember G includes a gas-chamber L and is provided with a singleadmission-opening adapted for attachment to a source of supply such asis found in the ordinary chandelier or gas-lamp. At the upper portion ofthe chamber L are a plurality of discharge-openings, and in order toutilize as many or as few of these as desirable I arrange for thedetachable connection of removable nozzles H (one or more) and also ofremovable plugs M, (one or more.) The effect of substituting a plug Mfor a nozzle His merely to convert the tube B in line with such pluginto a draft-tube instead of a mixing-tube. In the burner shown Ipurpose under ordinary conditions of supply to arrange the nozzles in anannulus, as

shown in Fig. 4:, with a single plug M at the ment at will. Thedetachable nozzles are also most easily cleaned.

My improvements as above described are adapted for use with any of theordinary chimneys or globes. Preferably I arrange a globe N upon aclosed rim or socket O, which is connected to the shell of themixing-chamber A. By this construction no air is permitted to enterWithin the globe except through the open chamber 0 at the bottom of theburner and through the flame. Hence the draft is made very effective todraw in air through the mixing-tubes and through the draft-tube.

In operation the gas passes through the gaschamber L and the nozzles Hinsmall jets, which pass up through the corresponding tubes B, carryingwith them a suitable quantity of air from the openchamber O, anddischarge into the mixing-chamber A, in which they are all completelymixed before passing through the screen E to the flame within the mantleF. Air passes also through the central draft-tube B into the center ofthe mixingchamber A, so as to mix to some extent with the gas and airtherein'and so as also to admit air to the interior of the flame abovethe screen, so as to press the flame out against the mantle in themanner described in my aforesaid patent.

ThoughI have described with great particularity of detail an apparatusembodying my invention, yet it is to be understood that the invention isnot limited to the specific form shown and described, since variousmodifications of the details and arrangements of the parts are possibleto those skilled in the art without departure from the invention. Forexample, it is preferred to make the mixing-chamber A of a greaterheight than that which would be assumed by the blue cores of flamesissuing from the mixing-tubes B, as explained in my aforesaid patent;but some of the features of my improved burner are independent of themixing-chamber A. Also though I prefer to use removable nozzles H, sothat they may be easily removed and thoroughly cleaned and may bearranged in any desired grouping in connection with removable plugs, yetthis construction'is not essential to theother features of improvement.

The nozzles H virtually form part of that portion of the member G whichforms the gaschamber L and constitute outlets for said chamber. I alsodesire to call attention to the fact that the mixing-tubes B do not restdirectly on the gas-chamber, and therefore do not carry the weight ofthe entire superstructure; but these tubes are contained within theshell D, which therefore becomes the supporting member.

What I claim is- 1. In a gas-burner, a casing consisting of a solid bodyhaving in its interior a series of discharging jets of gas into the openends of I said tubes.

2. The combination of a group of mixers comprising tubes terminating attheir lower ends in a common open chamber, and gasnozzles in saidchamber arranged to direct jets of gas into said tubes, the dischargeends of said nozzles being located below the lower ends of said tubesand below the upper edges of the openings by which said chambercommunicates with the outside air.

3. The combination of a group of mixers comprising tubes terminating attheir lower ends in a common open chamber, gas-nozzles in said chamberarranged to direct jets of gas into said tubes, a mixing-chamber locatedabove and communicating with said mixers, a draft-tube discharging intosaid mixing-chamber, and a screen closing the top of saidmixing-chamber.

4. The combination with an annular group of mixers comprising tubesterminating at their lower ends in a common open chamber, andgas-nozzles in said chamber arranged to direct jets of gas into saidtubes, of a mixingchamber located above and communicating with saidmixer-tubes, a central draft-tube terminating at its lower end in saidopen chamber and discharging into said mixingchamber, and a screenclosing the top of said mixing-chamber.

5. The combination with a member comprising an upper mixing-chamber, alower open chamber, and tubes communicating at their lower ends withsaid open chamber and discharging at their upper ends into saidmixing-chamber, of a second member carrying gas-nozzles and adapted tobe connected to said first-mentioned member with said nozzles in saidopen chamber and in line with said tubes.

6. In a gas-burner, a casing consisting of a solid body having in itsinterior a series of longitudinal channels forming a cluster ofmixing-tubes, which cluster is surrounded by said casing, the saidchannels being open to the atmosphere at one end, and a plurality ofmeans, the number of which is smaller than that of the said channels,for discharging jets of gas into the open ends of sundry of the saidchannels.

7. Theflcombination with a gas-chamber having a single admission-openingadapted for attachment to a source of supply and having a plurality ofdischarge-openings, of removable nozzles and removable plugs detachablyattached to said chamber at said discharge-openings.

8. In a gas-burner, comprisinga casing having three portions, viz: alower chamber open to the atmosphere, an upper mixing-chamber open tothe burner proper, and an intermediate portion having longitudinalchannels connecting the said two chambers, in combination with means,extending into said lower chamber, for discharging jets of gasinto theopen lower ends of said channels, the discharge ends of said means beinglocated Within said lower chamber at a distance below the lower ends ofsaid channels, and below the upper edges of the openings by which saidlower chamber communicates with the out-t side air.

9. The gas-chamber provided with one or more outlets combined with ashell testing on the gas-chamber and containing tubes at a distance fromsaid outlets and out of contact therewith.

1 0. The gas chamber provided with one or more outlets, combined withthe shell-containing a plurality of tubes out of contact with thegas-chamber and some of them in alinement with said outlets, While oneor more of said tubes are out of alinementwith,

the outlets, the said shell resting on the gaschamber.

In witness whereof I have hereunto signed my name in the presence of twosubscribing z 5 witnesses.

LOUIS DENAYROUZE. Witnesses: I l V MARGEL ARMENGAUD, EDWARD P; MAOLEAN.

